Pump



Nov. 9, 1943. w. A. JONES 2,334,148

PUMP

Filed June 25, 1941 5 Sheets-Sheet 1 2 I ENTOR Nov. 9, 1943. w. A. JONES2,334,148

PUMP

Filed. June 25, 1941 5 Sheets-Sheet 2 a? ll INVENTOR.

W/Z 1 4M 4. JO/V1515 1943- v w. A. JONES 2,334,143

I PUMP Filed June 25. 1941 5 Sheets-Shea; 3

' INVENTOR. WM 1 01M 4. uwvzv,

4 r TO/PNFP- Nov, 9, 1943.

W. A. JONES PUMP Filed June 25, 1941 5 Sheets-Sheet 4 INVENTOR.

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Nov. 9, 1943. w. A. JONES 2,334,148

- PUMP Filed June 25, 1941 5 Sheets-Sheet 5 7 m INVENTOR. r 1 -W/ll/4M4ua/vra,

- Patented Nov. 9, 1943 UNITED ST TE PATli.

I PUMP .William Jo11es;,stamrord, 0111111., as si gnor top k AmericanCyanamid v A Company, NewYork, N.YY., a corporation of Maine i a v i.Application June 25, isirserial No. ssassi i izciti'i iisg (c1;loaf-.149);

The present invention relates tof a1 {pump mechanism. 1 v I q Theprincipal object of thetinventionc';isito providea device of the abovecharactercapable mittently. 1 1, 1

Another object of theinvention is toyprovide a pump in which theamountof liquiddelivered at each impulse may beaccurately controlled andwhich amount may be adjustedat Twill through wide limits, even while thedevice is'in operation. 1 1 1 f Another important object is to provideatdevice of the above character which is'sturdy in of delivering uniformquantities of. liquid flinterconstruction, compact in arrangement,capable and 1 1 1 Fig, 8 is a sectional view along the line 88 Fig. 5 isa view along the.line 5-5 of Fig; 1; Fig. 6 is a perspective detail ofthe casing p per; l i

. Fig. 7 is agside view of a'modifiedassembly;

Referring now with particularity to the. de- 1 vices illustrated, aframe is shown generally at 1 as an electric motor, or the like,supplied with upon which is mounted a primemover 2; such current from asuitable source (notlshown) and of being easily cleaned and which hasfew parts to get out of order. 1 a V The invention in itsbroadest aspectcontemplates a pump of the Huber type for receivingliqe uid from asupply and moving it to" a' point of delivery with means "forintermittently operating the pump so as todeliver varying quantities'ofliquid tothe desired point.

The Huber pump comprises generally a length of collapsible tubing heldwithin a casing having an inner wall with a plurality of rollers mountedfor continuous contact with and collapsing the tubing against the innerwall. Thus; as each roller progresses along the tubing, it forces" liq}uid ahead of :it to the outlet where the 'liquid is discharged. i

1 The intermittent operating mechanism 'of'the present inventionconstitutes a prime mover such as an electric motor or -the like with orwithout theusual speed reducing mechanism} with avarying throwconnecting-rod constituting the mechanical connection between the primemover and an oscillating arm serving tolcauserotation having a standardtype of speed reducing mech- 'anism enclosed within'a housing 3.

'Aneccentric crank 4. is driven by the motor and carries a stub shaft :5terminating in a block 6- andheldi within a radially-extending, guidingslot inwthekeccentric 4.. The-block 6,.carrying1 the stubishait 15, maybermoved in this slotby means of r the 1 threaded shank, which .passestherethrough; and'terminates in knurled head' B, I Aoconnecting rod 9 isfitted at onee'nd: to the stubxfshait 5 .and held thereon bymeans ofknurled nut land at the' otherie nd is pivoted as at H to a. guidingblock 12.5 The block I 2 rides within a hollow oscillating arm Hand is"carried by athreaded red It. This rod is fixed within ajourhal member1|5-thr0ugh which it passes, by meansof 1 collar l6 1 and knurled f ad-ijus'ting knob l'l. The oscillating arm 13 a is' clamped within. anextensionof the journal 15. Thus, rotation; of the knurledadjustinglznob 1 I 1 causes movement'of-theguiding block [2 within ofthe squeezing roller in an intermittent manr neri. Inasmuch as, bothends of the'connecting rod are adjustable, the extent of its throw maybe readily controlled even While the ,device is in operation, toadjust-the amount of liquid delivy ered by the pump. l 1 1 The inventionfurther consists in the novel construction, arrangement and combinationof parts more fully hereinafter desc a dfi fiw in the accompanyingdrawings, in which Fig. 1 isa front view of 'a device embodying thepresent invention;

partly in section;

Fig. 3 is a rear view 'of'the 'devicefo f Fig] 1; 1 Fig.4 is a detailview showing the mannerj of 65 removalof the tube casing; I

Fig. 2 is a view along the line ZI-i-2 of Fig il,

' 'notc-hes ZI, each ofiwhich'tis located a toner 22; The rotor 20 fitsclosely'within the ournal lfi and moves with the shaft l9. i

. I From Fig. 3 itwill beseen that when the journal I5 moves'in a'counterclockwise direction, the rollers 22 also move in acounterclockwisedirec tion or into the widest-portion of the notches2l'] with the consequence that rotation dffthe -the pump shaft I91?Rotation of the journal I5 in" a clockwise direetionlflcauses 'rolle'rs22 to be moved clockwise and 'intothe" narrower portions wallthicknessesare .used. 1

rotor and the journal IS. AS a result, the shaft [9 is driven in aclockwise direction by the journal [5.

, 'Thus, rotation of the eccentric 4 c-ausesoscillation of the arm i3through the connecting rod 9 and throughthe clutch mechanismintermittent clockwise. movement of the "shaft IS.

The vpumpfn'i'echanisrn proper includes a'casing indicated generally at24 having a substane tially rectangular rear wall 25. The casing 24 ismounted on the frame l withits lower exten-Z sions 26 seated upon a pairof positioning sup: 1 ports 21 and held there'bymeans of upper and?lower pairs of retaining ears" 28'jon the frame,"

., .outer edge. I

type of adjustment and makes possible with a- I 1 suitable sized tubing,2. feed of even so small a which engage the front of the rear wall125 ofthe casing. These parts are so arrangedfithatWhenthe casing is inposition, its center. will accurately coincide with the center of shaftl9.

' On the pump. shaft. 5.9. isxmounted a rotary wa11:29 carrying-:3,-stub shaft, Eilprovided with a ball bearing mounted roller 3|; From Fig:2,.it isto benoted: thatithe innersurface of. the rotating wall 29 issubstantially flush with the inner face, of. the casing. 24 .and thatthe; upper edge of the circumference of the roller 3| is spaced slightlyfromfthe' cylindrical inner wall of. the

casing. I

A. convolution ofcollapsible tubing 32. is ariranged within the casinghaving. an inlet portion,

33. and a delivery portion '34, the roller and tubing 7 beingsopo'sitioned.thatthetubingiscompletely I collapsed between the rollerand-the inner wall of the-casing. .Consequently,.as the roller rotatesin a clockwise direction *(Fig; 1). liquid within the tubingbetween theroller 3| and-thedelivery end 34: is Jmoved toward the outlet in. an:intermittent manner, inasmuch as the roller. is. intermittently moved.At. the same. time; liquid withina.that

portion ofuthe'tubing.33xfollows alon'gbehind the roller. sofas itozkeep.the' tubing, full of liquid" .It: will be seenthat any desired size oftubing maybe used, itbeingxonly necessary to..change.

thesize of, the roller 3l where tubing of difierent the-inletportion-ofthe.I-tubing is held within; an aperture- 35 .-andthe/delivery end 34withinv an,,aperture 36,. the tube'is accurately held in place. It isdesirable to lubricate thesurface, of the, tube so that theroller. 3i.willjnot ,cre,

atea tendencyof the ,tube;to creep. Y

- position shown in Fig. 3.

of their notches under the impulse of coil springs 23,thus making awedge connection between the pound crank mechanism is provided betweenthe prime mover and the pump shaft I9 for moving the latterintermittently. The adjusting knobs 8 and I1 permit adjustment of thethrow and this compound crank, thus determining the feed of liquidthrough the outlet 34 of the tubing.

For instance, adjustment of the upper head 8. makes possible themovementof the upper endof the connecting rodf9 from dead center onf theeccentric, where no feed will result, out to its This, therefore,permits of the finest quantityas a fraction of a drop.

" "Adjustrnentfofithe knurled knob I! at the jour- Yn'al IB'wiIIfdtermine the relative position of the lower end lof "theconnecting rod 9 and consequently, -the degree of oscillation of the arm13.

Forinstance, when the end of the connecting rod is in'the position shownin Fig. 1, it will have considerably less movementsthanitwon ld Lin/theThus between the two adjusting nuts; any-idegree-;-,of mnvementz ofttheirollerf. 3.1-; may: be. Oh,-

tained upon asingle revolution .of: the eccentric A, In Figs. '7 and 8,a slightly modified; former assembly, is :shownu Here thesconnectingirodis, attached latiits lower? end toean. oscillatingiarmdimounted qr,

rectly on,.the-fixed;fstud. IS. without adjustment means at; thispoint-sThe same: typefi j clutgh mechanism is shown as has been previously; de;scribed for making an: int rmitt n d ivin .29

nection-betwecnth o ci lati arm. 4% an the numpshaftwsf a I Inthezpresent m dific tion, how er thesesing which contains thecollapsible tubing; is of sli htlyz d fieren orm-1' t i i d ca-ted, gneral y at s "being nfie t. a. part o t e bas and alsoqserving .to 1support; the prime moverv 2-. as

shown. the es n has ninne r e efi a'geint whi h neor mo e-leng hs 0i r ber t b n 45 and "1 e bing-i ,heldz np aqebrme ns ofclamps 48 The. p m shha meu eo 9.

he pump side-.o .e de i e, a ro a ing ear wall-A9 on which iseccentrically, mountedaplu,

r ity of tub n u n r r .5" a The? rollers are so arranged withrelationtmthe inner sti lness-.45 q the a ine and 'th QSs I the tubingused, that as the rear wall 4Srotatesth'e .tubing willbecompletelycollapsed between-the If forfany reason it: is desirable torem, ve-thecasing-with its contained tubing'for replacement,

repairer ad iustmenuthe lever 31 is moved from the position ShOWnin Fig.1,110 that of Fig. 4 withjthegresulttthat the camp38 is released fromthe topjofthe rearwall 2510i" the casing. Under the impulse ,of :coilspringafifi. (Fig. 2), the finger 40 pushes the casing Zllgupwardlyintothel losition shown in Fig; 4.1 'I he recesses 4| in the rear wall I25fofthe, casing permit clearance of. the

retainingears 128;, and, the casing may be; then withdrawn in a iO Warddirection. The casing may be :replaced by reversing the above operation. Y

Aknurled end of, the-pump-shaft 19 adjacent the rotor 20 forthepurposeof setting the positionor' the roller 3|, since it'isnecessarythat thisroller be loc te at'z upp ndi t i k wh n he rubbertube assemblyj is,:-removed or 1 replaced.

This position; illustrating} the clearance." between the roller and therubber tubing is shown in Figgl.

Fr m the shore-it wi b en t t 9 1 1- hand-wheel is secured to "theouter,

. r011er..a dz the m er W l and that th e a wi always, be a rollerzincol ap in con act:- W h the. tube; Consequently, a; flowof liquid.through m tubeiz may alwaiys be -;0btained so long asthe-repr wall; isbeing rotated-in a pumping; direction. The, casing; is 5 provided; with:a. front plate. 52

having a. series'fof ears 53 engaging:screwqthreadied studs, the wallbeing held in placebysuitable While' two lengths of tubing are'shown,yet-zany number can be usedj dependent'uponthe depth of the casing andthe size of thetub'es. J Where a plurality'of independentlengths oftublng are 7 used as shown, it'permits-of a multiple feedde vice wh h isomet m de i b e;

It. willf be v m moved by'simple removal of l the; irontfiwallj 52andlooseningbf the clamp' r'nembers 48. I It, will also be seen that "inthe same way thefrollers 50 and BI can.be;ren1oved from. their. stubShafts -3 0, .-at this time, as the front wall 52, serves; toholdthem'inplace.

knurled notedthat the tubing ay be re gram-4s The device'of; theinvention-may,besuccess fully used to feed liquids of any characterin afsirable where, for instance, reagents are being fed toa reactioninenstruum where an adjustment once fixed, should not be changed throughmere temperature changes. Again, such a deviceis particularly desirablein the-feeding of accurate amounts of very small quantities, such forinstance, as perfumes or biological products into ampules or the like.In such cases, fractions of drops may readily be accurately delivered bythe simple expedient of restricting the outlet end of the tube 34 as bymeans of a glass tip or the like (not shown). n the other hand,'thedevice maybe adjusted to deliver much larger quantitiesof liquid wheredesired.

While the invention has been shown and described with particularreferenc to specific embodiments, it is to be understood that it is notto be limited thereto, but is to be construed broadly and restrictedsolely by the scope of the appended claims.

1. A pump comprising a length of collapsible tubing held within a casinghaving an inner surface, said casing havinga rotatable wall, a rollereccentrically mounted on said wall' and making contact with andcollapsing the'tubing against the casing surface,.a shaft forrotatingsaid wall and means for intermittently rotating the shaft in onedirection including an over-run clutch.

2. A pump comprising a length of collapsible tubing held within a casinghavin an inner surface, said casing having a rotatable wall, a rollereccentrically mounted on said wall and making contact with andcollapsing the tubing against the casing surface, a shaft for rotatinsaid wall, a prime mover for rotating the shaft and a clutch between theprime mover and the shaft for intermittently rotating the latter.

3. A pump comprising a length of collapsible tubing held within a casinghaving an inner surface, said casing having a rotatable wall, a rollereccentrically mounted on said wall and making contact with andcollapsing the tubing against the casing surface, a shaft for rotatingsaid wall, a prime mover, an over-run clutch between the shaft and primemover, and a compound crank mechanism connecting the prime mover withthe shaft.

l. A pump comprising a length of collapsible tubing held within a casinghaving an inner surface, said casing having arotatable wall, a rollereccentrically mounted on' said wall and making contact with andcollapsing the tubing against the casing surface,,a shaft for rotatingaid wall,

a prime mover, an over-run clutch between the shaft and prime mover, anda compound crank mechanism connecting the prime mover with the shaft andmeans foradjusting the throw of the crank mechanism.

5; A pump comprising a length of collapsible trio and a connecting rod,

6. A pumpcomprising a length of collapsible tubing held within a casinghaving an inner sur face, saidcasing having a rotatable wall, a. rollereccentrically mounted on said wall and making contact with andcollapsing the tubing against the casing surface, a shaft for rotatingsaid wall,

a prime mover, an over-run clutch betweenthe shaft and prime mover, anda compoundcrank mechanism connecting the prime mover with the shaft,said compound crank including an eccentric and a connecting rod, theeccentric connecting the prime mover with the connecting rod and meansto adjust the relationship of the connecting rod to the eccentric, forvarying the movement of the rod.

7. A pump comprising a length of collapsible tubing held within a casinghaving an inner surface,said casing having a rotatable wall, a rollereccentrically mounted on said wall and making contact with andcollapsing the tubing against the casing surface, a shaft forrotatingsaid wall,

a prime mover, an over-run clutch between the sible tubing held Within acasing having an inner cylindrical surface, saidcasing having arotatable wall, a roller eccentrically mounted on said wall and makingcontact with and collapsing the tubing against the cylindrical surface,a shaft for tubing held within a casing having an inner surface, saidcasing having a rotatable wall, a roller rotating said wall, a primemover, an over-run clutch between the shaft and prime mover, and acompound crank mechanism connecting the prime mover with the shaft, thecompound crank mechanism including a connecting rod, a rotatableeccentric between the prime mover and one end of the connecting rod, andan oscillatin arm between the shaft and the other end of the connectingrod and means adjacent each end of the connecting rod for adjusting itsthrow.

9. A pump comprising a convolution of collapsible tubing held within acasing having an inner cylindrical surface, said casing having arotatable wall, a roller eccentrically mounted on said wall and makingcontinuous contact with and collapsing the tubing against thecylindrical surface, a shaft for rotating said Well, a prime mover, anover-run clutch between the shaft and prime mover, and a compound crankmechanism connecting the prime mover with the shaft, the compound crankmechanism including a, connecting rod, a rotatable eccentric between theprime mover and one end of the connecting rod, and an oscillating armbetween the shaft and the other end of the connecting rod and meansadjacent each end of the connecting rod for adjusting its throw, capableof being manually adjusted durfor intermittently rotating the shaft inone direction including anover-run clutch.

m theecce ntric' connect ing the prime mover with the connecting'rod.

11 A pump comprising a, convqlutiqn -of c9 lapsible tubingheld within acasing having an inner cylindrical surface, said ,pasing having a'rofiat'ab le wall, a. rollefeccentrically mounted on said wall andmaking continuous'gontac-twith and collapsing the tubing against thecylindrical Surface, a. shaft for rotating said Wall, a, prime inove'rfor rotating the shaft and Q. clutch between the prime mover and theshaftflfor interml ttent'ly rotating the latten.

12. A pump comprising a length of cbllaiasible tubing held withinayeasing mvm an innermiacq s aid casing having arotatable wal1,;.a p19rality of rollers eccentrrfi-cally mounted on l an soar an qc a we willa s b 5 atl east une roller making contact withand p01- m anover-mnclutch.

laps'ing the tube againstthe casingwall, -ashat$ for rotating said-wallsand. means for intenmittently rotating the shaft in one directionincl-14-

